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@article{DAN_1957_113_4_a8, author = {V. T. Poliatsky}, title = {On the reduction of quasi-unitary operators to a triangular form}, journal = {Doklady Akademii Nauk}, pages = {756--759}, publisher = {mathdoc}, volume = {113}, number = {4}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_113_4_a8/} }
V. T. Poliatsky. On the reduction of quasi-unitary operators to a triangular form. Doklady Akademii Nauk, Tome 113 (1957) no. 4, pp. 756-759. http://geodesic.mathdoc.fr/item/DAN_1957_113_4_a8/